pcre2: Replace LGPL21 with LGPL license header

Also use canonical contact url.

Change-Id: I61bf0990698a7021f1240deaf3eef2aff8f90a7e
Reviewed-by: Giuseppe D'Angelo <[email protected]>
Reviewed-by: Lars Knoll <[email protected]>

src/3rdparty/pcre2/import_from_pcre2_tarball.sh

@@ -2,31 +2,37 @@
 #############################################################################
 ##
 ## Copyright (C) 2016 Klarälvdalens Datakonsult AB, a KDAB Group company, [email protected], author Giuseppe D'Angelo <[email protected]>
-## Contact: http://www.qt.io/licensing/
+## Contact: https://www.qt.io/licensing/
 ##
 ## This file is the build configuration utility of the Qt Toolkit.
 ##
-## $QT_BEGIN_LICENSE:LGPL21$
+## $QT_BEGIN_LICENSE:LGPL$
 ## Commercial License Usage
 ## Licensees holding valid commercial Qt licenses may use this file in
 ## accordance with the commercial license agreement provided with the
 ## Software or, alternatively, in accordance with the terms contained in
 ## a written agreement between you and The Qt Company. For licensing terms
-## and conditions see http://www.qt.io/terms-conditions. For further
-## information use the contact form at http://www.qt.io/contact-us.
+## and conditions see https://www.qt.io/terms-conditions. For further
+## information use the contact form at https://www.qt.io/contact-us.
 ##
 ## GNU Lesser General Public License Usage
 ## Alternatively, this file may be used under the terms of the GNU Lesser
-## General Public License version 2.1 or version 3 as published by the Free
-## Software Foundation and appearing in the file LICENSE.LGPLv21 and
-## LICENSE.LGPLv3 included in the packaging of this file. Please review the
-## following information to ensure the GNU Lesser General Public License
-## requirements will be met: https://www.gnu.org/licenses/lgpl.html and
-## http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+## General Public License version 3 as published by the Free Software
+## Foundation and appearing in the file LICENSE.LGPL3 included in the
+## packaging of this file. Please review the following information to
+## ensure the GNU Lesser General Public License version 3 requirements
+## will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
 ##
-## As a special exception, The Qt Company gives you certain additional
-## rights. These rights are described in The Qt Company LGPL Exception
-## version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+## GNU General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU
+## General Public License version 2.0 or (at your option) the GNU General
+## Public license version 3 or any later version approved by the KDE Free
+## Qt Foundation. The licenses are as published by the Free Software
+## Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+## included in the packaging of this file. Please review the following
+## information to ensure the GNU General Public License requirements will
+## be met: https://www.gnu.org/licenses/gpl-2.0.html and
+## https://www.gnu.org/licenses/gpl-3.0.html.
 ##
 ## $QT_END_LICENSE$
 ##